No livro "Advanced race guide", o traço racial "Slow Speed" diz:
If the race is Medium, its members’ speed is never modified by armor or encumbrance.
Isso nega a penalidade das armaduras pesadas em x3 (em vez de x4) a velocidade normal durante a execução?
Ou é apenas uma maneira de dizer que a velocidade normal permaneceria nos pés 20 com ou sem armadura?
De PFSRD em movimento (ênfase minha):
Run (×3)
Moving three times speed is a running pace for a character in heavy armor (about 7 miles per hour for a human in full plate).Run (×4)
Moving four times speed is a running pace for a character in light, medium, or no armor (about 12 miles per hour for an unencumbered human, or 9 miles per hour for a human in chainmail.)
A distância que você move quando corre é baseado em sua velocidade, mas não é se uma velocidade.
De PFSRD oneração (ênfase minha):
Encumbrance by Weight: If you want to determine whether your character’s gear is heavy enough to slow him down more than his armor already does, total the weight of all the character’s items, including armor, weapons, and gear. Compare this total to the character’s Strength on Table: Carrying Capacity. Depending on the character’s carrying capacity, he or she may be carrying a light, medium, or heavy load. Like armor, a character’s load affects his maximum Dexterity bonus to AC, carries a check penalty (which works like an armor check penalty), reduces the character’s speed, and affects how fast the character can run, as shown on Table: Encumbrance Effects. A medium or heavy load counts as medium or heavy armor for the purpose of abilities or skills that are restricted by armor. Carrying a light load does not encumber a character.
Observe que a redução da velocidade do personagem e a distância da corrida são listadas separadamente.
De PFSRD na armadura (ênfase minha):
Medium or heavy armor slows the wearer down. The number on Table: Armor and Shields is the character’s speed while wearing the armor. Humans, elves, half-elves, and half-orcs have an unencumbered speed of 30 feet. They use the first column. Dwarves, gnomes, and halflings have an unencumbered speed of 20 feet. They use the second column. Remember, however, that a dwarf’s land speed remains 20 feet even in medium or heavy armor or when carrying a medium or heavy load.
Observe que ele não diz nada sobre anões obtendo sua velocidade quatro vezes durante a execução.
TLDR: "Velocidade" e "distância movida ao executar a ação Executar" são diferentes mecânicas de jogo. A característica de velocidade lenta apenas nega penalidades para o primeiro, e não para o último.